Source:http://linkedlifedata.com/resource/pubmed/id/11112402
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
2001-2-2
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pubmed:abstractText |
The approximately 20-Hz component of the human mu rhythm originates predominantly in the primary motor cortex. We monitored with a whole-scalp neuromagnetometer the reactivity of the approximately 20-Hz rhythm as an index of the functional state of the primary motor cortex in seven patients suffering from Unverricht-Lundborg type (ULD) progressive myoclonus epilepsy (PME) and in seven healthy control subjects. In patients, the motor cortex rhythm was on average 5 Hz lower in frequency and its strength was double compared with controls. To study reactivity of the approximately 20-Hz rhythm, left and right median nerves were stimulated alternately at wrists. In controls, these stimuli elicited a small transient decrease, followed by a strong increase ("rebound") of the approximately 20-Hz level. In contrast, the patients showed no significant rebounds of the rhythm. As the approximately 20-Hz rebounds apparently reflect increased cortical inhibition, our results indicate that peripheral stimuli excite motor cortex for prolonged periods in patients with ULD.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
1053-8119
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 2000 Academic Press.
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pubmed:issnType |
Print
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pubmed:volume |
12
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
707-12
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:11112402-Adolescent,
pubmed-meshheading:11112402-Brain Mapping,
pubmed-meshheading:11112402-Dominance, Cerebral,
pubmed-meshheading:11112402-Electric Stimulation,
pubmed-meshheading:11112402-Female,
pubmed-meshheading:11112402-Humans,
pubmed-meshheading:11112402-Magnetoencephalography,
pubmed-meshheading:11112402-Male,
pubmed-meshheading:11112402-Median Nerve,
pubmed-meshheading:11112402-Motor Cortex,
pubmed-meshheading:11112402-Myoclonic Epilepsies, Progressive,
pubmed-meshheading:11112402-Neural Inhibition,
pubmed-meshheading:11112402-Somatosensory Cortex
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pubmed:year |
2000
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pubmed:articleTitle |
Abnormal reactivity of the approximately 20-Hz motor cortex rhythm in Unverricht Lundborg type progressive myoclonus epilepsy.
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pubmed:affiliation |
Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Espoo, Finland.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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